Drier.



No. 775,717. PATENTED NOV. 22, 1904. T. ANDREWS I S. J. LOEWENTHAL.

DRIBR.

APPLICATION FILED APR. z3. 1904.

2 SHEETS-SHEET l.

N0 MODEL.

110.775.717. PATENTED Novfzz, 19o-4.

' T. ANDREWS & s. J. LoEwENT-HAL.

DRIBR. ff APPLICATION FILED APR. 23, 1904.

N0 MODEL. ZSHEBTS-SHEET 2.

J0 i --J 14 I? UNITED STATES Patented November 22, 1904.

PATENT OFFICE.

THOMAS ANDREWS AND SIMON J. LOEWENTHAL, OE EOOKAWAY,

- NEW. JERSEY. Y

DRIER.

SPECIFICATION forming part of Letters Patent No. 775,717, dated November22, 1904.

Application filed April 26., 1904. Serial No. 204,555, `(Novmodel.)

To a/ZZ whom it may concern:

Be it known that we, THOMAS ANDREWS and tion, a very great power andconsequentlarge amount of motive agent is required to operate themachine. Further, in the class of machines above referred to the severalcylinders must be filled with steam, which results in waste by employingmore Steam than is necessary for drying purposes.

The object of our invention is to obviate the above-mentioned objectionsby providing a drier in which each cylinder is rotated independentlywith a comparatively small amount of motive agent andv using the motiveagent as a heating medium, thus resulting in an economical use of steam.

Other objects of the invention will appear in the general description.

We will `describe a drier embodying our invention and then point out thenovel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part ofthis 'specilicatiom in which Similar characters of'reference indicatecorresponding parts in all the figures.

Figure 1 is a Side elevation of a drying-machine embodying ourinvention.Fig. 2 is an end elevation thereof. Fig. 3 is a longitudinal section ofone of the drying-cylinders em- Iloyed. Fig. 4 is a section on the line4 4 of Fig. 3. Fig. 6 is an end view, partly in secL tion, on the line 66 of Fig. 3; and Fig. 7 is a sectional detail showing one of theejectors employed.

Fig. 5 is a section on the line 5 5 of Y Referring to the drawings, 1011 designate two standards which are hollow, the one serving as asteam-supply, while the otherthat is, the standard ll-receives theexhaust from the several cylinders, to be hereinafter described. Thesteam enters the standard 10 at the bottom, as here shown, through apipe 12, and the exhaust from the standard 11 is through a pipe 13.Supported by the Standards at the front and rear are drying-cylinders14. The cylinders at one side alternate with thecylinders at theopposite side, or,'in other words, the cylinders at one'side havestaggered relation to the other series. Each cylinder comprises an outershell 15 and an linner Shell 16, the twoV Shells being spaced apart toform a steampassage which extends entirely around the cylinder. At oneend the cylinder is provided with a header consisting of a ring 17, towhich is removably attached 'a ring 18, which has bearings on afeed-pipe 19, the ring18 being provided With a suitable stufing-box 20.Attached to the inner Shell 16 is an inner header 21, which is hereshown as concaved at the side adjacent to the inlet of Steam, and thus aconsiderable'steam-space is afforded between the outer and innerheaders.

The ring 17 h as an inwardly-extended flange 22, and the Outer shell 15is secu red thereto by any suitable means.

As here shown, it is secured by means of a ring 23, which is shrunk inplace, and on the interiorofthis liange 22 are blades 24, which arearranged at a tangent and form the walls of t`urbine-bucletsr, Y

The inner head, it will be noted, has at inter- 'vals lugs 25, whichextend outward and engage with the inner edge of the iiange 22. Thespace between the lugs of course will permit the steam to pass betweenthe inner and outer shells.

The end of the pipe 19 within the cylinder is provided with a series ofports 26, and from each port discharge-pipes 27 lead to theturbine-buckets, these pipes of course being stationary. AS here shown,the pipes are connected to the inner end of the pipe 19 by means ofbolts or screws passing through lugs 28. The discharge-pipes 27 arecurved, and secured in the end of each discharge-pipe, as

shown in Fig. 7, by means of a screw-thread is a discharge-nozzle 29.The inlet-pipe 19 communicates with the standard 10 and, as here shown,is connected thereto by means of a coupling 30. We have shown threedischarge-pipes 27; but it is obvious that the number may be changedwithout departing from the spirit of our invention. The opposite ends ofthe inner and outer shells are connected to an outwardly-convexed header31, which is provided with a plurality of ports 32, providingcommunication from the space between the inner and outer shells to thecentral tubular hub 33 on the header. The ends of the ports 32 adjacentto the hub 33 have their walls curved outward, as indicated at 84, so asto quickly deflect exhaust into the hub. The hub has a bearing in acoupling 35, attached to a pipe 36, leading into the exhaust-standard11. The inner side of the header 31 is provided with an annular flange87, to which the inner shell 16 is connected, and the outer shell 15 isconnected to a flange 38 on the header and secured by means of a band39, shrunk thereon.

1n the operation the material to be dried is to be passed over thelcylinders in a zigzag fashion, and the steam admitted to the severalcylinders will act on the turbines thereofl and impart rotary motion,and then the steam will pass between the inner and outer shells to theexhaust, and therefore it will be seen that a comparatively small amountof steam will be required to perform the desired service.

Having thus described our invention, we claim as new and desire tosecure by Letters Patentl. A drier comprising a plurality of rotarycylinders each having double walls spaced to form a steam-chamber, andmeans for supplying a motive agent to each cylinder to rotate the same,each independently of the other, the said motive agent serving as laheating medium while passing through the steamchamber.

2. A drier comprising a plurality of cylinders mounted to rotate, eachindependently of the other, a turbine arranged in one end of eachcylinder, and a plurality of iixed pipes in the turbine end of eachcylinder to supply the motive agent to the turbine, the said motiveagent serving as a heating medium.

3. A drier comprising hollow standards, one serving as an inlet forsteam and the other serving for exhaust, a plurality of rotary cylindershaving independent connections with said standards, and turbine-bucketsin one end of each cylinder for receiving a motive agent which passesfrom said buckets through the cylinder to the exhaust.

4. A drier-cylinder comprising inner and outer shells spaced apart toform a circumferential steam-chamber, a header at one end of thecylinder, a steam-supply pipe extended through the said header and uponwhich the header rotates, discharge-pipes leading from the inner end ofsaid supply-pipe, turbinebuckets arranged in the cylinder and receivingsteam from said discharge-pipes, and a header at the opposite end of thecylinder provided with means for the exhaust of steam. 5. Adrier-cylinder comprising inner and outer shells spaced apart to form anannular passage for steam, a header on one end of the cylindercomprising an outer ring, an inner ring secured to the outer ring, asteam-supply pipe on which the inner ring is rotatably mounted, a header.for the inner shell arranged inward of the outer header, the said innerheader being concaved, a series of buckets arranged in the cylinderbetween said headers, discharge-pipes leading radially from thesteam-supply pipe and having nozzles for directing steam to saidbuckets, and a header at the opposite end of the cylinder provided witha tubular h ub and exhaust-ports, the said exhaust-ports leading fromthe space between the shells to the tubular hub.

6. A drier-cylinder comprising inner and outer shells spaced apart, aheader at one end to which the outer shell is connected, a header inwardof the first-named header and to which the inner shell is connected, anannular row of buckets arranged between the headers, a steamsupply pipeon which the outer header is mounted to rotate, discharge-pipes leadingfrom said supply-pipes to the buckets, and an outwardly-convexed headerat the opposite end to which the two shells are connected, the saidheader having a tubular hub, and a series of ports leading from said hubto the space between the shells.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

THOMAS ANDREWS. SlMON J. LOEWENTHAL. Witnesses:

JAMES H. SANDERS, WM. F. MOLLER.

IOO

